Surf Forecasts:
Jaconé surf forecast from 4 Sep 2026:
- Best quality surf: Monday 7 Sep, 3PM (local time) - 7ft (2.2m), 10s period, S swell with glassy winds.
- Most powerful swell: Monday 7 Sep, 12PM (local time) - 8ft (2.4m), 11s period, S swell with 1,304 kJ wave energy.
- Next surfable swell (1★+): Friday 4 Sep, 6PM (local time) - 3ft (0.9m), 11s period with SSE swell.
Best Forecast Surf Conditions for Jaconé this week:
The surf forecast for Jaconé over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 04) at 6PM. The primary swell is predicted to be 0.9m and 11s period with a secondary swell of 0.6m and 8s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Jaconé in the next 16 days are 2.4m 11s and forecast to arrive on Monday (Sep 07) at 12PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Tuesday (Sep 08) at 3AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Fri 4th Sep) | 3ft (0.9m) 11s |
| Best Surf | 3PM (Mon 7th Sep) | 7ft (2.2m) 10s |
| Most Powerful | 12PM (Mon 7th Sep) | 8ft (2.4m) 11s |
Table - best surf conditions forecast for Jaconé over the next 16 days.
The Lowdown
Alright, folks, Rusty here. Let’s break down what’s coming for Jaconé.
We’re starting off with a little bit of a slow burn. Friday morning, September 4th, is the first real look: a clean 4ft SSE swell, 11-second period, with a light offshore breeze from the NNE. Water temp is about 73°, which is normal for now. The energy is moderate (398). It’s a decent start, but the wind turns cross-shore by the afternoon, and the swell drops.
Saturday and Sunday are a complete washout – small, choppy, and blown out. Monday the 7th brings a bigger wave, 8ft from the south, but the wind is cross-onshore in the morning. The afternoon, though, turns glassy. That’s a solid 7ft S swell, 10-second period, and the energy is very strong (1054). That’s a big wave for the experienced crew only.
Tuesday the 8th is your best bet early on. A clean 5ft S swell, 11-second period, with a moderate offshore wind from the ENE. Energy is solid (663). This is a great, clean, consistent wave for intermediates. The offshore holds into Wednesday morning, too, with a smaller 3ft S swell, but still clean. Wednesday afternoon goes glassy.
The middle of the week gets small and a bit inconsistent. The 12th and 13th are poor, with tiny waves and bad wind.
Now, mark your calendar for Thursday, September 17th. The afternoon is a beauty. The wind goes flat glassy, and we get a 4ft S swell with a very long period of 17 seconds. That’s groundswell, pure and simple. The energy is strong (1058), and the direction is perfect. The long period will make the waves smooth, powerful, and lined up. This is a point-break dream. It’s a bit much for beginners, but for everyone else, this is the standout session of the whole forecast.
The 18th and 19th see a bigger pulse of swell, but the wind is messy. The 18th morning has a 8ft S swell with a 15-second period and very strong energy (3296), but the onshore wind will make it ugly. The 19th morning is a little better with a cross-shore wind, but still not perfect.
So, the first week has a few clean windows, but the real highlight is Thursday the 17th afternoon. Don’t sleep on it.
Rusty.
Short Range ForecastHeavy rain (total 21mm), heaviest during Sun morning. Warm (max 27°C on Fri morning, min 17°C on Sun afternoon). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 14mm), heaviest on Mon afternoon. Warm (max 24°C on Wed morning, min 16°C on Mon morning). Winds decreasing (fresh winds from the ENE on Tue night, calm by Wed afternoon). | ||||||||||||||||||||
Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SSE 11 | SSE 11 | SSE 11 | SSE 10 | SSE 10 | SSE 10 | S 10 | S 8 | S 8 | S 10 | S 10 | S 10 | S 11 | S 11 | S 11 | S 10 | S 10 | ENE 7 | S 12 | S 12 | ENE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 314 | 214 | 128 | 85 | 58 | 33 | 240 | 537 | 488 | 1265 | 1040 | 654 | 498 | 434 | 329 | 196 | 127 | 238 | 181 | 221 | 231 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | off | off | off | off | off | glassy | off | off | on | glassy |
High Tide | 9:34AM0.80m | 6:52PM0.67m | 11:33AM0.87m | 10:37PM0.65m | 12:30PM0.95m | 11:48PM0.74m | 1:13PM1.01m | 00:29AM0.84m | 1:48PM1.04m | 1:03AM0.95m | 2:17PM1.04m | 1:34AM1.03m | 2:41PM1.03m | 2:06AM1.09m | |||||||
Low Tide | 3:04PM0.50m | 3:12AM0.26m | 4:32PM0.51m | 4:32AM0.19m | 5:40PM0.47m | 5:39AM0.11m | 6:28PM0.42m | 6:33AM0.02m | 7:07PM0.37m | 7:19AM-0.03m | 7:41PM0.31m | 8:00AM-0.05m | 8:14PM0.26m | ||||||||
 | |  | |  |  |  | |  | | |  |  | |  | | | |  | | | |
 | 5:58 | — | — | 5:56 | — | — | 5:56 | — | — | 5:54 | — | — | 5:54 | — | — | 5:52 | — | — | 5:52 | — | — |
 | — | 5:40 | — | — | 5:40 | — | — | 5:40 | — | — | 5:40 | — | — | 5:42 | — | — | 5:42 | — | — | 5:42 | — |
mm | — | — | — | — | 2 | 2 | 5 | 4 | 8 | 2 | 4 | 5 | — | — | — | — | 3 | — | — | 5 | 1 |
Temp °C | 27 | 25 | 23 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 16 | 18 | 19 | 19 | 24 | 21 | 21 | 24 | 23 | 22 |
Feels °C | 28 | 26 | 24 | 24 | 23 | 23 | 18 | 17 | 16 | 16 | 17 | 15 | 16 | 16 | 16 | 25 | 24 | 23 | 26 | 25 | 24 |
Swell 1 Height (m) Direction Period (s) | SSE 11 | SSE 11 | SSE 11 | SSE 10 | SSE 10 | SW 6 | E 8 | E 8 | E 8 | S 10 | S 10 | S 10 | S 11 | S 11 | S 11 | E 7 | E 7 | E 7 | E 7 | S 12 | E 7 |
| kJ | 314 | 214 | 128 | 85 | 58 | 18 | 21 | 21 | 11 | 1265 | 1040 | 654 | 498 | 434 | 329 | 152 | 127 | 83 | 87 | 221 | 87 |
Swell 2 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 9 | E 9 | E 8 | SSE 10 | S 14 | SSW 13 | E 8 | S 20 | E 8 | S 18 | S 17 | SW 10 | S 10 | S 10 | S 9 | S 12 | E 8 | S 12 |
| kJ | 72 | 66 | 35 | 39 | 23 | 22 | 19 | 36 | 33 | 11 | 7 | 5 | 6 | 6 | 25 | 196 | 118 | 58 | 181 | 71 | 184 |
Swell 3 Height (m) Direction Period (s) | S 12 | S 11 | SSW 10 | SW 4 | SSW 9 | SSE 10 | S 15 | SSW 14 | E 8 | — | S 20 | S 18 | S 18 | — | S 16 | S 16 | S 15 | S 13 | SSE 9 | SE 13 | ESE 13 |
| kJ | 12 | 10 | 10 | 3 | 8 | 33 | 18 | 40 | 21 | — | 7 | 6 | 6 | — | 5 | 5 | 17 | 55 | 15 | 7 | 16 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | SW 3 | ESE 4 | S 10 | S 8 | S 8 | — | — | — | ESE 7 | ESE 7 | E 7 | E 7 | — | ENE 7 | — | — | ENE 7 |
| kJ | — | — | — | — | 5 | 3 | 240 | 537 | 488 | — | — | — | 153 | 186 | 233 | 181 | — | 238 | — | — | 231 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 10 | 58 | 58 | 10 | 58 | 58 | 2314 | 77 | 49 | 0 | 0 | 0 | 44 | 25 | 0 | 0 | 0 | 0 | 7 | 0 |
Best forecast wave conditions in Rio de Janeiro | |||||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||||
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Information about the Jaconé Surf forecast
The above surf forecast table for Jaconé provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Jaconé can be found by selecting the local surf guide option on the grey menu. Our Jaconé surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Jaconé) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Jaconé may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Jacone is 14 km (9 miles) from the city of Saquarema. If you plan a holiday in Rio de Janeiro, look for hotels and other accommodation in Saquarema. Saquarema has rooms for a wide range of budgets as well as car hire and transport links.
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